Sibling species exhibit:

Question

Sibling species exhibit:

I. sympatric distribution

II. morphological similarity

III. genetic identity

IV. reproductive isolation

1. A. Only III is correct
2. B. I and II are correct
3. C. II, III, and IV are correct
4. D. I, II, and IV are correct (Correct answer)

Correct Answer

Option D — I, II, and IV are correct

Detailed Solution & Explanation

The correct answer is I, II, and IV are correct.

Key Points

• Sibling species are morphologically very similar (II), can be sympatric (I), and are reproductively isolated (IV).
• They are NOT genetically identical (III is wrong) - they have differences in genetic makeup that define them as separate species.